From: Gustavo Padovan <gustavo.padovan@xxxxxxxxxxxxx>
Add implementation for async plane update callbacks
Signed-off-by: Gustavo Padovan <gustavo.padovan@xxxxxxxxxxxxx>
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@xxxxxxxxxxxxx>
Signed-off-by: Tina Zhang <tina.zhang@xxxxxxxxx>
Signed-off-by: Helen Koike <helen.koike@xxxxxxxxxxxxx>
Tested-by: Tina Zhang <tina.zhang@xxxxxxxxx>
---
Hi,
I tested this patch set with igt (ksm_cursor_legacy and plane_cursor_legacy)
and found no regressions.
This patch depends on [1] "[PATCH] drm: don't block fb changes for async plane updates",
which is already on drm-misc, otherwise there will be a regression on igt tests:
cursor-vs-flip-atomic-transitions-varying-size
cursor-vs-flip-toggle
cursor-vs-flip-varying-size
with errors of type:
"CRITICAL: completed 97 cursor updated in a period of 30 flips, we
expect to complete approximately 15360 updates, with the threshold set
at 7680"
When picking this patch, please backmerge [1] into drm-intel tree.
[1] https://cgit.freedesktop.org/drm/drm-misc/commit/?h=drm-misc-fixes&id=89a4aac0ab0e6f5eea10d7bf4869dd15c3de2cd4
Thanks
Helen
Changes in v9:
- v8: https://patchwork.kernel.org/patch/10843395/
- Added tested-by tag
- submitted to intel-gfx@xxxxxxxxxxxxxxxxxxxxx to invoke CI
- rebased and fixed conflicts on top of drm-tip
Changes in v8:
- v7: https://lkml.org/lkml/2018/6/8/168
- v7 was splited in two, one that adds the async callbacks and another
that updates the cursor.
- rebase with drm-intel
- allow async update in all types of planes, not only cursor
- add watermark checks in async update
- remove bypass of intel_prepare_plane_fb() in case of async update
- add missing drm_atomic_helper_cleanup_planes(dev, state) call in
intel_atomic_commit().
- use swap() function in async update to set the old_fb in the
new_state object.
- use helpers intel_update_plane()/intel_disable_plane()
Changes in v7:
- Rebase on top of drm-intel repository. Hopefully now will play
nicely with autobuilders.
Changes in v6:
- Rework the intel_plane_atomic_async_update due driver changed from
last time.
- Removed the mutex_lock/unlock as causes a deadlock.
Changes in v5:
- Call drm_atomic_helper_async_check() from the check hook
Changes in v4:
- Set correct vma to new state for cleanup
- Move size checks back to drivers (Ville Syrjälä)
Changes in v3:
- Move fb setting to core and use new state (Eric Anholt)
.../gpu/drm/i915/display/intel_atomic_plane.c | 71 +++++++++++++++++++
drivers/gpu/drm/i915/display/intel_display.c | 9 +++
2 files changed, 80 insertions(+)
diff --git a/drivers/gpu/drm/i915/display/intel_atomic_plane.c b/drivers/gpu/drm/i915/display/intel_atomic_plane.c
index 30bd4e76fff9..56881a7ec48e 100644
--- a/drivers/gpu/drm/i915/display/intel_atomic_plane.c
+++ b/drivers/gpu/drm/i915/display/intel_atomic_plane.c
@@ -348,8 +348,79 @@ void i9xx_update_planes_on_crtc(struct intel_atomic_state *state,
}
}
+static int intel_plane_atomic_async_check(struct drm_plane *plane,
+ struct drm_plane_state *state)
+{
+ struct drm_crtc_state *crtc_state;
+
+ crtc_state = drm_atomic_get_existing_crtc_state(state->state,
+ state->crtc);
+ if (WARN_ON(!crtc_state))
+ return -EINVAL;
+
+ /*
+ * When crtc is inactive or there is a modeset pending,
+ * wait for it to complete in the slowpath
+ */
+ if (!crtc_state->active || to_intel_crtc_state(crtc_state)->update_pipe)
+ return -EINVAL;
+
+ /*
+ * If any parameters change that may affect watermarks,
+ * take the slowpath. Only changing fb or position should be
+ * in the fastpath.
+ */
+ if (plane->state->crtc != state->crtc ||
+ plane->state->src_w != state->src_w ||
+ plane->state->src_h != state->src_h ||
+ plane->state->crtc_w != state->crtc_w ||
+ plane->state->crtc_h != state->crtc_h ||
+ !plane->state->fb != !state->fb)
+ return -EINVAL;
+
+ return 0;
+}
+
+static void intel_plane_atomic_async_update(struct drm_plane *plane,
+ struct drm_plane_state *new_state)
+{
+ struct intel_atomic_state *intel_new_state =
+ to_intel_atomic_state(new_state->state);
+ struct intel_plane *intel_plane = to_intel_plane(plane);
+ struct drm_crtc *crtc = plane->state->crtc;
+ struct intel_crtc_state *new_crtc_state;
+ struct intel_crtc *intel_crtc;
+ int i;
+
+ for_each_new_intel_crtc_in_state(intel_new_state, intel_crtc,
+ new_crtc_state, i)
+ WARN_ON(new_crtc_state->wm.need_postvbl_update ||
+ new_crtc_state->update_wm_post);
+
+ i915_gem_track_fb(intel_fb_obj(plane->state->fb),
+ intel_fb_obj(new_state->fb),
+ intel_plane->frontbuffer_bit);
+
+ plane->state->src_x = new_state->src_x;
+ plane->state->src_y = new_state->src_y;
+ plane->state->crtc_x = new_state->crtc_x;
+ plane->state->crtc_y = new_state->crtc_y;
+
+ swap(plane->state->fb, new_state->fb);
+
+ if (plane->state->visible)
+ intel_update_plane(intel_plane,
+ to_intel_crtc_state(crtc->state),
+ to_intel_plane_state(plane->state));
+ else
+ intel_disable_plane(intel_plane,
+ to_intel_crtc_state(crtc->state));
+}
+
const struct drm_plane_helper_funcs intel_plane_helper_funcs = {
.prepare_fb = intel_prepare_plane_fb,
.cleanup_fb = intel_cleanup_plane_fb,
.atomic_check = intel_plane_atomic_check,
+ .atomic_async_check = intel_plane_atomic_async_check,
+ .atomic_async_update = intel_plane_atomic_async_update,
};
diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 8d7e4c8b60bc..bf505b70a037 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -14007,6 +14007,15 @@ static int intel_atomic_commit(struct drm_device *dev,
struct drm_i915_private *dev_priv = to_i915(dev);
int ret = 0;
+ if (state->async_update) {
+ ret = drm_atomic_helper_prepare_planes(dev, state);
+ if (ret)
+ return ret;
+ drm_atomic_helper_async_commit(dev, state);
+ drm_atomic_helper_cleanup_planes(dev, state);
+ return 0;
+ }
+
intel_state->wakeref = intel_runtime_pm_get(&dev_priv->runtime_pm);
drm_atomic_state_get(state);
--
2.20.1
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